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Autor:innen: 
Erscheinungsjahr: 
2018
Schriftenreihe/Nr.: 
GLO Discussion Paper No. 263
Verlag: 
Global Labor Organization (GLO), Maastricht
Zusammenfassung: 
Analysis of open-access common-property natural resource (NR) has occurred under “low” congestion (LC) – where 𝐴𝐶 and 𝑀𝐶 increase with output 𝑄 – and has for the most part ignored the more important congestion categories where 𝐴𝐶 (𝑀𝐶) is backward-bending (negative) and welfare and NR losses are significantly greater. This paper identifies two such categories, “high” (HC) and “super” (SC) congestion, and examines the impact of open access on steady-state welfare, NR, employment, output and price in a general equilibrium model. Main findings are: i) Welfare and NR costs (and optimal taxes) are a multiple or orders of magnitude greater under HC and (especially) SC than under LC, with trade further – and always – reducing an open-access exporter’s NR and welfare. These results are robust to alternative parameter values and functional forms and greatly increase the importance of regulation; ii) An optimal tax raises price and reduces output under autarky in the case of LC and HC but reduces price and raises output under SC, with significantly larger gains; iii) Studies conducted under LC show trade between open-access developing country C1 and regulated but otherwise identical C2 reduces C1’s welfare and both C1’s and global NR, and though the same holds under HC, the opposite holds under SC; iv) Trade between two open-access countries – say, a developing and an emerging one – with different externality (population) levels raises global output and welfare, improves NR’s global efficiency, raises (does not affect) its level, and reduces international inequality; and v) Emigration’s welfare gain is much larger under SC than under LC, especially if migration results in LC after migration. Application to other issues and policy implications are provided.
Schlagwörter: 
Open Access
natural resource
unexamined high congestion
autarky and trade
aquaculture
JEL: 
D62
F18
Q22
Q27
Q56
Dokumentart: 
Working Paper

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